EP 1450354 A1 20040825 - System for suppressing impulsive wind noise
Title (en)
System for suppressing impulsive wind noise
Title (de)
Vorrichtung zur Unterdrückung von impulsartigen Windgeräuschen
Title (fr)
Dispositif de suppression de bruits de vent à impulsion
Publication
Application
Priority
- US 44951103 P 20030221
- US 41073603 A 20030410
Abstract (en)
The invention includes a method, apparatus, and computer program to selectively suppress wind noise while preserving narrow-band signals in acoustic data. Sound from one or several microphones is digitized into binary data. A time-frequency transform is applied to the data to produce a series of spectra. The spectra are analyzed to detect the presence of wind noise and narrow band signals. Wind noise is selectively suppressed while preserving the narrow band signals. The narrow band signal is interpolated through the times and frequencies when it is masked by the wind noise. A time series is then synthesized from the signal spectral estimate that can be listened to. This invention overcomes prior art limitations that require more than one microphone and an independent measurement of wind speed. Its application results in good-quality speech from data severely degraded by wind noise. <IMAGE>
IPC 1-7
IPC 8 full level
H04R 3/00 (2006.01)
CPC (source: EP US)
G10L 21/0208 (2013.01 - EP US); G10L 21/0232 (2013.01 - EP US); G10L 21/0264 (2013.01 - US); G10L 2021/02163 (2013.01 - US); H04R 2410/07 (2013.01 - EP US)
Citation (search report)
- [A] US 2001028713 A1 20011011 - WALKER MICHAEL [DE]
- [DA] US 5568559 A 19961022 - MAKINO JUN [JP]
- [XAY] PUDER H ET AL: "Improved noise reduction for hands-free car phones utilizing information on vehicle and engine speeds", SIGNAL PROCESSING X THEORIES AND APPLICATIONS. PROCEEDINGS OF EUSIPCO 2000. TENTH EUROPEAN SIGNAL PROCESSING CONFERENCE, PROCEEDINGS OF 10TH EUROPEAN SIGNAL PROCESSING CONFERENCE, TAMPERE, FINLAND, 4-8 SEPT. 2000, 2000, Tampere, Finland, Tampere Univ. Technology, Finland, pages 1851 - 1854 vol.3, XP009030255, ISBN: 952-15-0443-9
- [Y] PATENT ABSTRACTS OF JAPAN vol. 1995, no. 02 31 March 1995 (1995-03-31)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1450354 A1 20040825; EP 1450354 B1 20060621; CA 2458427 A1 20040821; CN 100394475 C 20080611; CN 1530928 A 20040922; DE 602004001241 D1 20060803; DE 602004001241 T2 20061109; JP 2004254329 A 20040909; JP 4256280 B2 20090422; US 2004165736 A1 20040826; US 2011123044 A1 20110526; US 2016343385 A1 20161124; US 7885420 B2 20110208; US 9373340 B2 20160621; US 9916841 B2 20180313
DOCDB simple family (application)
EP 04003811 A 20040219; CA 2458427 A 20040218; CN 200410004563 A 20040223; DE 602004001241 T 20040219; JP 2004045524 A 20040220; US 201113013358 A 20110125; US 201615177807 A 20160609; US 41073603 A 20030410